From your textbook review questions. During embryonic development, unique cell layers develop into specific groups of tissues or organs during a stage called ________. the blastula stage the germ layer stage the gastrula stage the organogenesis stage

From your textbook review questions. Frogs belong to which order? Anura Urodela Caudata Apoda

From your textbook review questions. The circulatory fluid in echinoderms is _____. blood mesohyl water saline

From your textbook review questions. Flies are_______. chelicerates hexapods arachnids crustaceans

From your textbook review questions. Which group of flatworms are primarily ectoparasites of fish? monogeneans trematodes cestodes turbellarians

From your textbook review questions. Hagfish, lampreys, sharks, and tuna are all chordates that can also be classified into which group? Craniates Vertebrates Cartilaginous fish Cephalochordata

From your textbook visual connections questions. Which of the following statements is false? Choanocytes have flagella that propel water through the body. Pinacocytes can transform into any cell type. Lophocytes secrete collagen. Porocytes control the flow of water through pores in the sponge body.

From your textbook review questions. Cnidocytes are found in _____. phylum Porifera phylum Nemertea phylum Nematoda phylum Cnidaria

From your textbook review questions. Which of these locomotor organs would likely be the shortest? a flagellum a cilium an extended pseudopod a pellicle

Which nation pioneered most of the methods and advances of industrialization?